How to set the Origin to the center of an Array?
I have an intuition that this MIGHT work, so try this. Hover your mouse(pointer) over where you want the origin to be(here:the centre of the array) and then hold down shift and right click .
This actually places the cursor(the small round thingy in the viewport) there. Now right-click the mesh and set origin to 3D cursor(there's an option for that under set origin).This places the origin where the 3D cursor is and voila! The origin is set to the centre of the mesh.
P.S. I'm a beginner in blender, like, an absolute noob. Please don't kill me if this doesn't work.